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filtering machine, may be employed. [cause the oil to satisfy the sixth requirement-by evaporat ng the two r Q inn tetra g'atcnt' ffiny P. H. VANDER WEYDE, OF H LADELPHIA, PENNSYL ANI AQ 1 Letters Patent No. 62,092, dated Forum I12, 1867. r r I f y y IMPBovEfi'LUBsIcATine OIIL.

Eli: 5:1 am more i in the: @ettns new: in imzkinq nnt'hf thinned Be it known that I, P, H. VANDER \Vl-IYDH, of Philadelphia, smut of Pennsylvania, after a ning series of experiments on that subject, have succeeded to find the proper substnnccs'and the methodoftreating them, so as r r to manufacture a. Superior Lubricntor for Machinery; and I do hereby declare that the followin gQis a full and exact description thereof. I y h The-nature of my invention consists in producing an oil which possesses all the slifi'erent requisites for a good lubricator, and none of the defects of other oils, ivhich requisites I will en ume at here, :is heir knowledge is neccssary to the right understanding of the process of manufacturing a pcri'ectdubricatort first, the lubricator must not freeze nor solidify at the temperature of our coldest winter :days, say 10 below zero, Fahrenheit, as is the case with sperm and lard oil, which freeze already at 40 above zero; second, it "must not dry by oxidation or otherwise, and form a gummy crust like linseed oil, which does not frezyatIZOi, but is a drying oil; third, it must not have been treated .withacirl's, which rob all oils of their smoothness, asis thee c \vith'heavy kerosene and some vegetable oils intus e; fourth, it' must not naturallfeontain ariyifattyi ac i combined and neutralized by glycerine, because, when turning rancid, these fatty aeids" become free and act chemically on brass, e'tc.; they corrode the machinery, as isLthc case with all the an mal aud j vegetahle and oils; fifth, it must be pure and perfectly transpareiit, and oontai'n'no gritty, earthy, or mineral matter, which will attack fine machinery, as is the case with crude petroleum; sixth, itmust not' evaporz cyand leave the parts dry, as is the case ivith kerosene, paraiiine oil, coal oil, ah rl in general, nll'distilled oils,which ,l being products of'distillntion or condensed vapors, will evaporate again; seventh, it must not betoo thin, and adhesirc, and stick to the lubricated parts, not snag removed by mere-friction, as islth e case \vith hea vy kerosene or parafiinc oils, which drain entirely ofi'nndleave the parts dry. t i i y I have found thecrude petroleuminaturally to answer perfectlyto the four first requisites, audjIhave succeeded by proper treatment tomnke it answer the other requisites also, thus producing thatgreat desideratnm 1 i of our age, a perfect lubricatozx. a y I i In order to enable others to make use of my invention, I will describe it minutely. t t t I cause the crude petroleum to satisfy the fifth requisite by simply filtering itthi'ough suitable material, as has already been practised before, for which pur ose my percolator, patented tenth, oiiiany other:

volatile parts in a water or steam bath, taking care not to raise the temperature abovc30 0, a' in thatcase a, destructive eh'nnge sets in' and tar is formed, which, containing very fine but gritty free carbonyvis antiinpef lubricator. In the caseoftreating heavy petroleum of 30speci fic gravity, or thereabout, I let thej vap escape, but in case of treating the light petroleum of about 40,'it is profitable to; condense and collect the: escaping vapors of naphtha and kerosene, as they constitute more than fifty per cen-taof, the oil, I carry this evaporation on till the oil has been reduced to a specific gravity of 26?, cause the oll to satisfy theseventh requirement by boiling it with animal matter, like blood, watery extract of bones, hbcfs skins, on othlensirnilal substances containing fibrin, albumen, gela ti.'ie,'marrow, etc., and. afterwards dissolvingin it a small 'qiiantity of pure common resin by this treatment. the oil becomes nnctuous and adhesive, without being in the least gummy. For certain purposes the resin may be omitted. The evaporation of the oil 'and the boiling Process with animal matter may be combined and pe ri'ormedhy the same operatioin When the evaporation is accohi plished inn closed vessel, as'is necessary when treating light oils, it may be promoted by a'current ofgcold warm air passed by suitable means ovcror through the oil. a 1 3 What Iclaim, a 1d wish to secure by Letters oF Patent, ist 3 V The manufacture. of illuminating or linrflwingoil, and asuperior lubricating oil, from common petroleum, combining the filtering, evaporating at a law temperature, and thickening processes above described. i In testimony whereof Iha-ve sig'ncd my name to this spccificationin' thepresence oftwo subscribingwitnessest P. H. VANDER wnvnn Witnesses:

ADOLF O'r'r, WM. Ronmson. 

